Which device might be installed at a branch office to enable and manage an IPsec site-to-site VPN?（）

What is the purpose of the cisco Vlan Trunking protocol?（）

Which IPsec security protocol should be used when confidentiality is required?（）

At which layer of the OSI model dose PPP perform?（）

An employee of ABC company has move to an office on a different floor. Although the administrator is able to telnet to all of the routers,the address of Switch F is needed in order to verify that the employee remains in the same VLAN.Which action could be used by the administrator to find the IP address of Switch F?（）

Which statement is true, as relates to classful or classless routing?（）

Three access ports have been installed and configured to a small office.What term defines the wireless topology?（）

A network administrator needs to configure a serial link between the main office and a remote location.The router at the remote office is a non-cisco router. How should the network administrator configure the serial interface of the main office router to make the connection?（）

What is the default administrative distance of OSPF?（）

What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?（）